removed mssql dependency from go.mod

v3/go.mod

@@ -3,7 +3,6 @@ module github.com/newrelic/go-agent/v3
 go 1.7
 
 require (
-	github.com/denisenkom/go-mssqldb v0.11.0
 	github.com/golang/protobuf v1.3.3
 	google.golang.org/grpc v1.27.0
 )

v3/integrations/nrmssql/go.mod

@@ -0,0 +1,21 @@
+module github.com/newrelic/go-agent/v3/integrations/nrmssql
+
+go 1.17
+
+require (
+	github.com/denisenkom/go-mssqldb v0.12.2
+	github.com/newrelic/go-agent/v3 v3.16.1
+)
+
+require (
+	github.com/golang-sql/civil v0.0.0-20190719163853-cb61b32ac6fe // indirect
+	github.com/golang-sql/sqlexp v0.1.0 // indirect
+	github.com/golang/protobuf v1.4.3 // indirect
+	golang.org/x/crypto v0.0.0-20201016220609-9e8e0b390897 // indirect
+	golang.org/x/net v0.0.0-20210610132358-84b48f89b13b // indirect
+	golang.org/x/sys v0.0.0-20210423082822-04245dca01da // indirect
+	golang.org/x/text v0.3.6 // indirect
+	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 // indirect
+	google.golang.org/grpc v1.39.0 // indirect
+	google.golang.org/protobuf v1.25.0 // indirect
+)

v3/integrations/nrmssql/nrmssql.go

@@ -49,9 +49,9 @@ import (
 	"database/sql"
 	"fmt"
 	"github.com/denisenkom/go-mssqldb/msdsn"
+	"github.com/newrelic/go-agent/v3/internal"
 
 	"github.com/denisenkom/go-mssqldb"
-	"github.com/newrelic/go-agent/v3/internal"
 	"github.com/newrelic/go-agent/v3/newrelic"
 	"github.com/newrelic/go-agent/v3/newrelic/sqlparse"
 )